The escape velocity on earth is 11.2 km/s. On another planet having twice radius and 8 times mass of the earth, the escape velocity will be
(a) 3.7 km/s (b) 11.2 km/s
(c) 22.4 km/s (d) 43.2 km/s
Answer: c
(5)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)